BREMERTON, Wash. – Chum salmon appear to have a cockroach-like resistance to pollution. Scientists at Washington State University’s stormwater research center in Puyallup recently made the surprising discovery that chum …

Spokane County’s permit to operate its 2-year-old, $173 million wastewater plant was partially invalidated by state regulators last week. The Washington State Pollution Control Hearings Board said the methodology used …

Widespread low levels of man-made chemicals used to produce nonstick cookware and breathable waterproof clothing have been detected in Washington water and fish, according to a Department of Ecology study …

A yearlong study of Spokane’s aquifer has identified businesses and industrial activity near the city’s eight major drinking water wells that could harm water quality. The $500,000 study, released Friday, …

Scenic Mobile Estates violated state environmental regulations by not routinely monitoring its water for coliform bacteria, according to the Idaho Division of Environmental Quality. Public drinking-water systems are required to …